If 𝑦¯ = 39.0 (sample mean of variable 𝑦) and 𝑠𝑦 = 18.0 (sample standard deviation of variable 𝑦), find the 𝐳 score of  𝑦1 = 18.0 (a particular observation of variable 𝑦).  Give your answer to 2 decimal places.

Calculate the standard deviation of the sample quantitative data shown, to two decimal places. x 5 10.6 2 24.7 22.3 18.9 Standard deviation:

In a mathematics test, the scores obtained by 45 students were recorded as shown in the table below.Score(x)53576265K768283No. of students46679544The score K with frequency of 9 is not given. Given that ∑fd∑f=−0.6 where d=x−68, and using an assumed mean of 68, determine score K.60696865

Based on the below table, answer the following question:xP(x)30.0540.4050.3060.1570.10What is the standard deviation?Question 3Answera.4.85b.1.06c.0.3

For the data set 6, 5, 10, 11, 13, the mean, x, is 9. What is the standard deviation?The formula for the sample standard deviation is 𝑠=1𝑛−1Σ(𝑥−𝑥ˉ)2s= n−11​ Σ(x− xˉ ) 2 ​ .Use the table to help you.Round your answer to the nearest tenth.

Standard Normal DistributionA random variable X is normally distributed with a mean (µ) of 80 and standard deviation (σ) of 10. If the z-score of a point on X is -1.5, then what is the value of that point on X?65957293